libbulletworldimporter2.81 2.81-rev2613+dfsg-2 (armhf binary) in ubuntu saucy

 Bullet professional 3D Game Multiphysics Library provides state of the art
 collision detection, soft body and rigid body dynamics.
 .
 This package contains the BulletWorldImporter shared library which can be
 used by Blender and other Software to export or import the Bullet physics
 file format.
 .
 For more information about Bullet, please refer to the libbullet-dev package.